Fix phone-only Mesh Lab scenario selection

docs/release-gate-runbook.md

@@ -298,7 +298,7 @@ python3 tools/release_gate/mesh_lab.py scenario all \
 | `dm` | Noise handshake both ways, encrypted DM round trips with content match |
 | `favorite_verification` | favorite signal, orange-outline/filled mutual state, and peer fingerprint verification |
 | `broadcast` | public mesh message A→B |
-| `watch_power` | phone→Watch screen-off delivery, two-link ceiling, scan quiescence, and zero background RSSI polling |
+| `watch_power` | phone→Watch screen-off delivery, two-link ceiling, scan quiescence, and zero background RSSI polling (Watch topology only) |
 | `ptt_dm` | Noise-encrypted 440 Hz PTT in both directions; asserts real-time capture, zero sequence gaps, decoded PCM duration/energy/continuity, and finalized-note absorption |
 | `ptt_broadcast` | signed public 440 Hz PTT with the same bidirectional packet and decoded-audio quality assertions |
 | `file` | 1 KB broadcast file, receiver SHA-256 matches fixture |
@@ -308,7 +308,7 @@ python3 tools/release_gate/mesh_lab.py scenario all \
 | `raw` | raw packet injection is accepted by the mesh |
 | `session_recovery` | force-stop B mid-session: identity persists, re-handshake, DMs flow again |
 | `identity_reset` | pm clear B mid-session: new identity, rediscovery, handshake, DMs |
-| `all` | every scenario above in sequence |
+| `all` | every scenario supported by the selected topology in sequence; phone→phone excludes Watch-only checks |
 
 Each run writes `<scenario>-evidence.json` to `--out` (digests, timings,
 session states, logcat excerpts on failure) and exits non-zero on failure.

tools/release_gate/mesh_lab.py

@@ -964,9 +964,12 @@ SCENARIOS = {
     "identity_reset": scenario_identity_reset,
 }
 
+WATCH_ONLY_SCENARIOS = frozenset({"watch_power"})
+PHONE_SCENARIOS = tuple(name for name in SCENARIOS if name not in WATCH_ONLY_SCENARIOS)
+
 # Scenarios supported when device B is a watch (file scenarios are receive-only: phone sends,
 # the watch must receive with matching digests).
-WATCH_SCENARIOS = [
+WATCH_SCENARIOS = (
     "dm",
     "favorite_verification",
     "broadcast",
@@ -978,14 +981,14 @@ WATCH_SCENARIOS = [
     "file_private",
     "session_recovery",
     "identity_reset",
-]
+)
 
 
 def run_scenario(name: str, a: Device, b: Device, out: Path | None) -> dict:
     started = time.time()
     evidence: dict[str, object] = {"scenario": name, "devices": [a.alias, b.alias]}
     try:
-        supported = WATCH_SCENARIOS if isinstance(b, WatchDevice) else list(SCENARIOS)
+        supported = WATCH_SCENARIOS if isinstance(b, WatchDevice) else PHONE_SCENARIOS
         if name == "all":
             results = {}
             failures = []

tools/release_gate/test_mesh_lab.py

@@ -0,0 +1,40 @@
+import unittest
+from unittest import mock
+
+from tools.release_gate import mesh_lab
+
+
+class MeshLabScenarioDispatchTest(unittest.TestCase):
+    def scenario_handlers(self):
+        return {
+            name: mock.Mock(return_value={"scenario": name})
+            for name in mesh_lab.SCENARIOS
+        }
+
+    def test_phone_all_excludes_watch_only_scenarios(self):
+        handlers = self.scenario_handlers()
+        phone_a = mesh_lab.Device("phone-a", "alpha")
+        phone_b = mesh_lab.Device("phone-b", "beta")
+
+        with mock.patch.object(mesh_lab, "SCENARIOS", handlers):
+            result = mesh_lab.run_scenario("all", phone_a, phone_b, out=None)
+
+        self.assertEqual("pass", result["status"])
+        handlers["watch_power"].assert_not_called()
+        for name in mesh_lab.PHONE_SCENARIOS:
+            handlers[name].assert_called_once_with(phone_a, phone_b)
+
+    def test_watch_all_includes_watch_power(self):
+        handlers = self.scenario_handlers()
+        phone = mesh_lab.Device("phone", "alpha")
+        watch = mesh_lab.WatchDevice("watch")
+
+        with mock.patch.object(mesh_lab, "SCENARIOS", handlers):
+            result = mesh_lab.run_scenario("all", phone, watch, out=None)
+
+        self.assertEqual("pass", result["status"])
+        handlers["watch_power"].assert_called_once_with(phone, watch)
+
+
+if __name__ == "__main__":
+    unittest.main()